Is level 9 winnable?
I got to level 9 with a killer base that had no trouble with anything previous, and level 9 dragged on for at least 3 or 4 times longer than previous levels. It started getting impossible when like 10-20 huge ships appeared, that just wouldn't die--they seemed a LOT tougher than previous huge ships that looked the same. I realized (still with half my life left) that without a powerup I was dead, because these ships just were invincible.
Problems:
1. The magnet should also work on the biggest ships. Dammit, I was waiting for a powerup and I get a magnet and it doesn't help me at all.
2. If you move the mouse only a very short distance before releasing, your gun doesn't seem to do any damage to the big ships even though the explosion is right on them.
If level 9 is unwinnable, that's really cheap.